<!--
 * @Author: shuai
 * @Date: 2021-03-31 13:46:52
 * @LastEditors: shuai
 * @LastEditTime: 2021-04-02 10:11:21
 * @Description: file content
-->
<template>
  <div v-if="isExternal" :style="styleExternalIcon" class="svg-external-icon svg-icon" v-bind="$attrs" />
  <svg v-else :class="svgClass" aria-hidden="true" v-bind="$attrs">
    <use :xlink:href="iconName" />
  </svg>
</template>

<script lang="ts">
// doc: https://panjiachen.github.io/vue-element-admin-site/feature/component/svg-icon.html#usage
import { isExternal as isExternalFun } from '@/utils/validate'
import { defineComponent, computed, toRefs } from 'vue'
export default defineComponent({
  name: 'SvgIcon',
  props: {
    iconClass: {
      type: String,
      required: true,
    },
    className: {
      type: String,
      default: '',
    },
  },
  setup(props) {
    const { iconClass, className } = toRefs(props)
    const isExternal = computed(() => isExternalFun(iconClass.value))
    const iconName = computed(() => `#icon-${iconClass.value}`)
    const svgClass = computed(() => (className.value ? 'svg-icon ' + className.value : 'svg-icon'))
    const styleExternalIcon = computed(() => ({
      mask: `url(${iconClass.value}) no-repeat 50% 50%`,
      '-webkit-mask': `url(${iconClass.value}) no-repeat 50% 50%`,
    }))
    return {
      isExternal,
      iconName,
      svgClass,
      styleExternalIcon,
    }
  },
  // computed: {
  //   isExternal() {
  //     return isExternal(this.iconClass)
  //   },
  //   iconName() {
  //     return `#icon-${this.iconClass}`
  //   },
  //   svgClass() {
  //     if (this.className) {
  //       return 'svg-icon ' + this.className
  //     } else {
  //       return 'svg-icon'
  //     }
  //   },
  //   styleExternalIcon() {
  //     return {
  //       mask: `url(${this.iconClass}) no-repeat 50% 50%`,
  //       '-webkit-mask': `url(${this.iconClass}) no-repeat 50% 50%`,
  //     }
  //   },
  // },
})
</script>

<style scoped>
.svg-icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  fill: currentColor;
  overflow: hidden;
}

.svg-external-icon {
  background-color: currentColor;
  mask-size: cover !important;
  display: inline-block;
}
</style>
